US123500A - Improvement in governor cut-offs - Google Patents

Description

H. H. MEYER. Improvement in Governor Cut Offs. No. 123,500.

Fate nted Fein. 6,', 1.872;

Hl VH. M EYER 3 Sheets--Sheet 2.

lmprovemen yimGm/elfnor Cut Offs. 910,123,500, r PatentedFeb. 6,1372.

il I' MEYER.

H. H. lmprovemen in Governor Cut Offs.

Patented Feb-'6, 1872.

v hw@ :MH IINNI! Nrrnn raras nrnrrr IMPROVEMENT INl GOVERNOR CUTOFFS.

Specification forming part of Letters Patent No. 123,500, dated February 6, 1872.

To all fuhom t may concern:

Be it known that I, HERMAN H. MEYER, of Denver, in the county of Arapahoe, in the Territory of Colorado, have invented a new and useful Improvement in Governor Out-Offs 5 and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this speciiicat-ion, in which drawing- Figure l represents a sectional front view of my cut-ofi' mechanism, showing its connection with the governor and with the steam-valves of an engine. Fig. 2 is a sectional plan or top view of the same. Fig. 3 is a detached sectional rear view of my cut-oft' mechanism. Fig. 4 is a side view of a modiiication thereof.

Similar letters indicate corresponding parts.

This invention consists in the arrangement of a slide moving in guide-slots in a frame which is suspended from a rock-shaft, and which forms the bearings for the fulcrunrpins of two levers, connecting at their upper ends with the slide, and at their bottom ends with the steam-valve of an engine in such a manner that, by imparting to the rock-shaft an oscillating motion, the steam-valves receive the required motion to admit steam alternately at one and then at the opposite end of the cylinder, and by connecting the slide with the governor the steam-valves are moved toward or from each other, according to the speed of the engine, and steam is cut oit' sooner or later, as the governor dictates.

In the drawing, the letters A A designate two standards, which are secured to the frame of a steam-engine, as indicated in Fig. 1, and which form the bearings for a rock-shaft, B, on the end of which is mounted an arm, C, that connects with an eccentric on the crankshaft, so as to impart to the rockshaft the required oscillating motion. On this rock-shaft is also secured a pendent frame, D, the two side pieces ot' which are provided with slots a to receive a slide, E, which connects, by straps F, pivot b and lever Gr with the governor, as indicated 'in Fig. 1. The slide E connects, by links c, with levers H H', which have their fulcrums on pivots d, secured on opposite sides in the pendent frame l); and from the lower ends of these levers extend rods I l to the steam-valves J J ot' the engine. These steamvalves are situated on one side of the cylinder, while the exhaust-valves are situated on the opposite side thereof; and motion is imparted to said exhaust-valves by a separate eccentric.

This arrangement of the steam and exhaust valves forms no part ot my present invention; but I prefer to use valvesot' such a construction that the pressure of the steam acting on them is balanced as near as practicable, so that said valves can be moved with the least possible friction.

'lhe steam-valves J J', being connected to the levers H H', receive areciprocating motion by the action of the eccentric, which iml parts motion to the rock-shaft B, and said valves are so arranged that when the same are caused to close up steam is cut ott' from the cylinder at an earlier part ot' the stroke than when said valves are moved apart.

By referring to Figs. l and 3 of the vdrawing it will be seen that whenever the slide E is depressed the steam-valves are caused to close up, and when said slide is raised the steamvalves are moved apart.

The connection between the slide E 'and the governor is such that, when the balls of the governor tly out, the slide .is depressed, and since, by this motion, the steam-valves are caused to close up, steam is cut oit' at an earlier part of the stroke than it is if the balls of the governor sink down, and, consequently, an automatic cut-oft' is obtained which regulates itself according to the changes in the speed of the engine.

In Figs. l, 2, and 3 I have shown levers H H', which are connected to the slide E by means oflinks c; but the connection between the slide and said lever may be effected in dit'- ferent waysT-such, for instance, as shown in Fig. ll, where the slide is provided with oblique slots c* to act on pins g, which 4are secured in the upper ends of the levers H H- and, by the action ot' these oblique slots on said pins, an oscillating motion is imparted to the levers H H! whenever the slide E is raised or depressed, and the steam-valves are closed up or moved apart, as previously explained.

Y What I claim as new, and desire to secure by Letters Patent, is

The slide E, connected to the governor of a steam-engine and moving in a pendent frame, D, mounted on a rock-shaft., B, which receives an oscillating motion from the main, shaft of the engine, in combination with levers H H',

which have their fulcrums in the pendent frame -D and connect with the steam-valves and with said slide, substantially in the inanner and for the purpose herein shown and described.

v HERMAN HENRY MEYER. Titnessesz JOHN W. WEBSTER,

F. JENSEN.

Images